Commit Graph

194 Commits

Author SHA1 Message Date
Linus Torvalds cdb54fac35 Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/drzeus/mmc:
  mmc: correct request error handling
  mmc: Flush block queue when removing card
  mmc: sdhci high speed support
  mmc: Support for high speed SD cards
  mmc: Fix mmc_delay() function
  mmc: Add support for mmc v4 wide-bus modes
  [PATCH] mmc: Add support for mmc v4 high speed mode
  trivial change for mmc/Kconfig: MMC_PXA does not mean only PXA255
  Make general code cleanups
  Add MMC_CAP_{MULTIWRITE,BYTEBLOCK} flags
  Platform device error handling cleanup
  Move register definitions away from the header file
  Change OMAP_MMC_{READ,WRITE} macros to use the host pointer
  Replace base with virt_base and phys_base
  mmc: constify mmc_host_ops vectors
  mmc: remove kernel_thread()
2006-12-02 08:29:04 -08:00
Linus Torvalds 4549df891a Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (36 commits)
  Driver core: show drivers in /sys/module/
  Documentation/driver-model/platform.txt update/rewrite
  Driver core: platform_driver_probe(), can save codespace
  driver core: Use klist_remove() in device_move()
  driver core: Introduce device_move(): move a device to a new parent.
  Driver core: make drivers/base/core.c:setup_parent() static
  driver core: Introduce device_find_child().
  sysfs: sysfs_write_file() writes zero terminated data
  cpu topology: consider sysfs_create_group return value
  Driver core: Call platform_notify_remove later
  ACPI: Change ACPI to use dev_archdata instead of firmware_data
  Driver core: add dev_archdata to struct device
  Driver core: convert sound core to use struct device
  Driver core: change mem class_devices to be real devices
  Driver core: convert fb code to use struct device
  Driver core: convert firmware code to use struct device
  Driver core: convert mmc code to use struct device
  Driver core: convert ppdev code to use struct device
  Driver core: convert PPP code to use struct device
  Driver core: convert cpuid code to use struct device
  ...
2006-12-01 16:41:07 -08:00
Greg Kroah-Hartman fcaf71fd51 Driver core: convert mmc code to use struct device
Converts from using struct "class_device" to "struct device" making
everything show up properly in /sys/devices/ with symlinks from the
/sys/class directory.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-01 14:52:00 -08:00
Pierre Ossman 8b7feff881 mmc: correct request error handling
We need to jump to the part of just flushing the request
when we cannot claim the bus. Sending commands to a bus
we do not own will give unpredictable results.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 19:06:19 +01:00
Pierre Ossman 89b4e133af mmc: Flush block queue when removing card
After mmc_block's remove function has exited, we must not
touch the card structure in any way. This means we not only
must remove the gendisk, we must also flush out any
remaning requests already queued up.

We previously removed the disk, but didn't flush it,
causing oops:es when removing a card in the middle of a
transfer.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 19:06:05 +01:00
Pierre Ossman 077df88483 mmc: sdhci high speed support
The SDHCI spec implies that is is incorrect to set a clock
frequency above 25 MHz without setting the high speed bit.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:54:10 +01:00
Pierre Ossman 7ccd266e67 mmc: Support for high speed SD cards
Modern SD cards support a clock speed of 50 MHz. Make sure we test for
this capability and do the song and dance required to activate it.

Activating high speed support actually modifies the TRAN_SPEED field
of the CSD. But as the spec says that the cards must report 50 MHz,
we might as well skip re-reading the CSD.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:53:37 +01:00
Pierre Ossman 73778120c4 mmc: Fix mmc_delay() function
Several fixes for mmc_delay():

 * Repair if-clause that was supposed to detect sub-hz delays.
 * Change yield() to cond_resched() as yield() no longer has the
   semantics we desire.
 * mmc_delay() is used to guarantee protocol delays, so we cannot
   return early (i.e. use _interruptable).

Based on patch by Amol Lad.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:27:23 +01:00
Philip Langdale e45a1bd20f mmc: Add support for mmc v4 wide-bus modes
This change adds support for the mmc4 4-bit wide-bus mode.

The mmc4 spec defines 8-bit and 4-bit transfer modes. As we do not support
any 8-bit hardware, this patch only adds support for the 4-bit mode, but
it can easily be built upon when the time comes.

The 4-bit mode is electrically compatible with SD's 4-bit mode but the
procedure for turning it on is different. This patch implements only
the essential parts of the procedure as defined by the spec. Two additional
steps are recommended but not compulsory. I am documenting them here so
that there's a record.

1) A bus-test mechanism is implemented using dedicated mmc commands which allow
for testing the functionality of the data bus at the electrical level. This is
pretty paranoid and they way the commands work is not compatible with the mmc
subsystem (they don't set valid CRC values).

2) MMC v4 cards can indicate they would like to draw more than the default
amount of current in wide-bus modes. We currently will never switch the card
into a higher draw mode. Supposedly, allowing the card to draw more current
will let it perform better, but the specs seem to indicate that the card will
function correctly without the mode change. Empirical testing supports this
interpretation.

Signed-off-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:22:44 +01:00
Philip Langdale bce40a36de [PATCH] mmc: Add support for mmc v4 high speed mode
This adds support for the high-speed modes defined by mmc v4
(assuming the host controller is up to it). On a TI sdhci controller,
it improves read speed from 1.3MBps to 2.3MBps. The TI controller can
only go up to 24MHz, but everything helps. Another person has taken
this basic patch and used it on a Nokia 770 to get a bigger boost
because that controller can run at 48MHZ.

Signed-off-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:21:32 +01:00
Marcin Juszkiewicz 9c9c26188f trivial change for mmc/Kconfig: MMC_PXA does not mean only PXA255
PXA MMC driver supports not only PXA255 but also PXA250 and newer ones

Signed-off-by: Marcin Juszkiewicz <hrw@openembedded.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:06:36 +01:00
Juha Yrjola juha.yrjola c5cb431d27 Make general code cleanups
This patch is part of Juha Yrjola's and Komal Shah's earlier patch to
make general code cleanups

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com>
Signed-off-by: Komal Shah <komal_shah802003 <at> yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:02:03 +01:00
Tony Lindgren tony f4204fdf05 Add MMC_CAP_{MULTIWRITE,BYTEBLOCK} flags
This patch is part of Tony Lindgren's earlier patch to add
MMC_CAP_{MULTIWRITE,BYTEBLOCK} flags in omap.c

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Tony Lindgren <tony <at> atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:01:44 +01:00
Juha Yrjola juha.yrjola 81ca70343f Platform device error handling cleanup
This patch is part of Juha Yrjola's earlier patch to add platform device
error handling and a BUG_ON to verify if host == NULL

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:01:32 +01:00
Juha Yrjola juha.yrjola 0551f4df35 Move register definitions away from the header file
This patch is part of Juha Yrjola's earlier patch to move register
definitions away from the header file and the header file is removed.

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:01:16 +01:00
Juha Yrjola juha.yrjola 3342ee8bfa Change OMAP_MMC_{READ,WRITE} macros to use the host pointer
This patch is part of Juha Yrjola's earlier patch to change
OMAP_MMC_{READ,WRITE} macros to use the host pointer

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:00:34 +01:00
Juha Yrjola juha.yrjola 89783b1e44 Replace base with virt_base and phys_base
This patch is part of Juha Yrjola's earlier patch to replace base
with virt_base and phys_base

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
Signed-off-by: Juha Yrjola <juha.yrjola <at> solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 18:00:11 +01:00
David Brownell ab7aefd0b3 mmc: constify mmc_host_ops vectors
Now that mmc_host_ops can be constified, update the various drivers
to constify those method tables and shrink the writable data segment.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 17:58:53 +01:00
Christoph Hellwig 87598a2bd4 mmc: remove kernel_thread()
Replace kernel_thread() with kthread_run()/kthread_stop().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-12-01 17:56:46 +01:00
Eric Sesterhenn d99c590985 BUG_ON conversion for drivers/mmc/omap.c
This patch converts a if () BUG(); construct to BUG_ON();
which occupies less space, uses unlikely and is safer when
BUG() is disabled.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-11-30 05:27:38 +01:00
Timo Teras 63ef731aa6 MMC: Do not set unsupported bits in OCR response
The card might go to inactive state (according to specification), if
there are unsupported bits set in the OCR.

Signed-off-by: Timo Teras <timo.teras@solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-11-09 07:23:54 +01:00
Timo Teras 25a122fd0d MMC: Poll card status after rescanning cards
Some broken cards seem to process CMD1 even in stand-by state. The result is
that the card replies with ILLEGAL_COMMAND error for the next command sent
after rescanning. Currently the next command is select card, which would
return the error. But CMD7 does actually succeed and retries of the command
will timeout. The workaround is to poll card status after CMD1 to clear the
pending error.

Signed-off-by: Timo Teras <timo.teras@solidboot.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
2006-11-09 07:23:37 +01:00
Al Viro 2099c99e3b [PATCH] missing includes of io.h
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-24 22:01:11 -07:00
Al Viro e4cad1b5a4 [PATCH] passing pointer to setup_timer() should be via unsigned long
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-10 15:37:22 -07:00
Al Viro e069d79d23 [PATCH] tifm __iomem annotations, NULL noise removal
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-09 14:19:08 -07:00
Pierre Ossman ec5a19dd93 [PATCH] mmc: multi sector write transfers
SD cards extend the protocol by allowing the host to query a card how many
blocks were successfully stored on the medium.  This allows us to safely write
chunks of blocks at once.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06 08:53:41 -07:00
David Howells 7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00
Pierre Ossman 176f00ffed [PATCH] mmc: properly use the new multi block-write error handling
Use the new multi block-write error reporting flag and properly tell the block
layer how much data was transferred before the error.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:15 -07:00
Pierre Ossman 7104e2d5a8 [PATCH] mmc: use own work queue
The MMC layer uses the standard work queue for doing card detection.  As this
queue is shared with other crucial subsystems, the effects of a long (and
perhaps buggy) detection can cause the system to be unusable.  E.g.  the
keyboard stops working while the detection routine is running.

The solution is to add a specific mmc work queue to run the detection code in.
This is similar to how other subsystems handle detection (a full kernel
thread is the most common theme).

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:15 -07:00
Pierre Ossman 8a4da1430f [PATCH] mmc: avoid some resets without card
Some Ricoh controllers only respect a full reset when there is no card in the
slot.  As we wait for the reset to complete, we must avoid even requesting
those resets on the buggy controllers.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:14 -07:00
Pierre Ossman 5f25a66f6b [PATCH] mmc: fix MMIO vs memory races in sdhci
Sprinkle some mmiowb() where needed (writeX() before unlock()).

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:14 -07:00
Alex Dubov f956512999 [PATCH] mmc: driver for TI FlashMedia card reader - Kconfig/Makefile
Signed-off-by: Alex Dubov <oakad@yahoo.com>
Cc: Daniel Qarras <dqarras@yahoo.com>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:14 -07:00
Alex Dubov 4020f2d7f0 [PATCH] mmc: driver for TI FlashMedia card reader - source
Driver for TI Flash Media card reader.  At present, only MMC/SD cards are
supported.

[akpm@osdl.org: cleanups, build fixes]
Signed-off-by: Alex Dubov <oakad@yahoo.com>
Cc: Daniel Qarras <dqarras@yahoo.com>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-04 07:55:14 -07:00
Pierre Ossman 643f720cea [PATCH] mmc (mainly): add "or later" clause to licence statement.
Clarify my (Pierre's) position on which GPL versions apply.  The patch only
touches the source files where I am the only major author.  The people who
have made the minor commits to the files have been contacted and have no
issues with this change.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01 00:39:23 -07:00
David Howells 9361401eb7 [PATCH] BLOCK: Make it possible to disable the block layer [try #6]
Make it possible to disable the block layer.  Not all embedded devices require
it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require
the block layer to be present.

This patch does the following:

 (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev
     support.

 (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls
     an item that uses the block layer.  This includes:

     (*) Block I/O tracing.

     (*) Disk partition code.

     (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS.

     (*) The SCSI layer.  As far as I can tell, even SCSI chardevs use the
     	 block layer to do scheduling.  Some drivers that use SCSI facilities -
     	 such as USB storage - end up disabled indirectly from this.

     (*) Various block-based device drivers, such as IDE and the old CDROM
     	 drivers.

     (*) MTD blockdev handling and FTL.

     (*) JFFS - which uses set_bdev_super(), something it could avoid doing by
     	 taking a leaf out of JFFS2's book.

 (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and
     linux/elevator.h contingent on CONFIG_BLOCK being set.  sector_div() is,
     however, still used in places, and so is still available.

 (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and
     parts of linux/fs.h.

 (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK.

 (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK.

 (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK
     is not enabled.

 (*) fs/no-block.c is created to hold out-of-line stubs and things that are
     required when CONFIG_BLOCK is not set:

     (*) Default blockdev file operations (to give error ENODEV on opening).

 (*) Makes some /proc changes:

     (*) /proc/devices does not list any blockdevs.

     (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK.

 (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK.

 (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if
     given command other than Q_SYNC or if a special device is specified.

 (*) In init/do_mounts.c, no reference is made to the blockdev routines if
     CONFIG_BLOCK is not defined.  This does not prohibit NFS roots or JFFS2.

 (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return
     error ENOSYS by way of cond_syscall if so).

 (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if
     CONFIG_BLOCK is not set, since they can't then happen.

Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-30 20:52:31 +02:00
Jens Axboe 4aff5e2333 [PATCH] Split struct request ->flags into two parts
Right now ->flags is a bit of a mess: some are request types, and
others are just modifiers. Clean this up by splitting it into
->cmd_type and ->cmd_flags. This allows introduction of generic
Linux block message types, useful for sending generic Linux commands
to block devices.

Signed-off-by: Jens Axboe <axboe@suse.de>
2006-09-30 20:23:37 +02:00
Linus Torvalds ebdea46fec Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (130 commits)
  [ARM] 3856/1: Add clocksource for Intel IXP4xx platforms
  [ARM] 3855/1: Add generic time support
  [ARM] 3873/1: S3C24XX: Add irq_chip names
  [ARM] 3872/1: S3C24XX: Apply consistant tabbing to irq_chips
  [ARM] 3871/1: S3C24XX: Fix ordering of EINT4..23
  [ARM] nommu: confirms the CR_V bit in nommu mode
  [ARM] nommu: abort handler fixup for !CPU_CP15_MMU cores.
  [ARM] 3870/1: AT91: Start removing static memory mappings
  [ARM] 3869/1: AT91: NAND support for DK and KB9202 boards
  [ARM] 3868/1: AT91 hardware header update
  [ARM] 3867/1: AT91 GPIO update
  [ARM] 3866/1: AT91 clock update
  [ARM] 3865/1: AT91RM9200 header updates
  [ARM] 3862/2: S3C2410 - add basic power management support for AML M5900 series
  [ARM] kthread: switch arch/arm/kernel/apm.c
  [ARM] Off-by-one in arch/arm/common/icst*
  [ARM] 3864/1: Refactore sharpsl_pm
  [ARM] 3863/1: Add Locomo SPI Device
  [ARM] 3847/2:  Convert LOMOMO to use struct device for GPIOs
  [ARM] Use CPU_CACHE_* where possible in asm/cacheflush.h
  ...
2006-09-28 14:40:39 -07:00
Linus Torvalds fecf3404f4 Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-mmc
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-mmc:
  [MMC] Don't check READY_FOR_DATA when reading
  [MMC] MMC_CAP_BYTEBLOCK flag for non-log2 block sizes capable hosts
  [MMC] Add multi block-write capability
  [MMC] Remove data->blksz_bits member
  [MMC] Convert mmci to use data->blksz rather than data->blksz_bits
2006-09-28 14:23:55 -07:00
Andrew Victor 72729910c3 [ARM] 3865/1: AT91RM9200 header updates
This is more preparation for adding support for the new Atmel AT91SAM9
processors.

Changes include:
- Replace AT91_BASE_* with AT91RM9200_BASE_*
- Replace AT91_ID_* with AT91RM9200_ID_*
- ROM, SRAM and UHP address definitions moved to at91rm9200.h.
- The raw AT91_P[ABCD]_* definitions are now depreciated in favour of
the GPIO API.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-28 11:52:05 +01:00
Ralf Baechle 53e62d3aaa [PATCH] Alchemy: Delete unused pt_regs * argument from au1xxx_dbdma_chan_alloc
The third argument of au1xxx_dbdma_chan_alloc's callback function is not
used anywhere.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-26 08:48:54 -07:00
Russell King 2ed6d22cec [MMC] Don't check READY_FOR_DATA when reading
There's no point checking to see if the card is ready to accept
data when we're reading from it - sending the command only wastes
precious bus bandwidth.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-24 10:46:43 +01:00
Russell King 42431acbac [MMC] MMC_CAP_BYTEBLOCK flag for non-log2 block sizes capable hosts
Some MMC hosts can only handle log2 block sizes.  Unfortunately,
the MMC password support needs to be able to send non-log2 block
sizes.  Provide a capability so that the MMC password support can
decide whether it should use this support or not.

The unfortunate side effect of this host limitation is that any
MMC card protected by a password which is not a log2 block size
can not be accessed on a host which only allows a log2 block size.

This change just adds the flag.  The MMC password support code
needs updating to use it (if and when it is finally submitted.)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-24 10:44:09 +01:00
Russell King db53f28b3a [MMC] Add multi block-write capability
Add a capability flag for drivers to set when they can perform multi-
block transfers to cards _and_ correctly report the number of bytes
transferred should an error occur.

The last point is very important - if a driver reports more bytes than
were actually accepted by the card and an error occurs, there is the
possibility for data loss.

Pierre Ossman provided the patch for wbsd and sdhci.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-16 11:57:49 +01:00
Russell King 132919ba80 [MMC] Remove data->blksz_bits member
data->blksz_bits is unused now - remove it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-16 11:54:04 +01:00
Russell King 3bc87f243f [MMC] Convert mmci to use data->blksz rather than data->blksz_bits
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-16 11:50:29 +01:00
Pierre Ossman 6fe9febb8a [MMC] Always use a sector size of 512 bytes
Both MMC and SD specifications specify (although a bit unclearly in
the MMC case) that a sector size of 512 bytes must always be
supported by the card.

Cards can report larger "native" size than this, and cards >= 2 GB
even must do so. Most other readers use 512 bytes even for these
cards. We should do the same to be compatible.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-07 16:01:30 +01:00
Russell King d773d72551 [MMC] Cleanup 385e3227d4
Rather than having two places which independently calculate the
timeout for data transfers, make it a library function instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
2006-09-07 15:57:12 +01:00
Pavel Pisa 148f93d59c [ARM] 3751/1: i.MX/MX1 SD/MMC use 512 bytes request for SCR read
Patch from Pavel Pisa

This is another approach to SDHC deficiency workaround.
It seems, that previous solution based on 16 bytes (FIFO length size)
read is still timing sensitive on genirq and fully preemptive kernels.
The new solution is backuped by M9328 UM statement, that only 512 byte
block are working properly and by 2.4.26 FreeScale's SDHC code.

Jay Monkman reports significant improvement on code based
on this driver after applying this change on MX21 as well.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-07 15:53:29 +01:00
Pierre Ossman 385e3227d4 [MMC] Fix SD timeout calculation
Secure Digital cards use a different algorithm to calculate the timeout
for data transfers. Using the MMC one works often, but not always.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-07 13:18:40 +01:00
Pierre Ossman dd2c609c59 [MMC] Another stray 'io' reference
Another misuse of the global 'io' variable instead of the local 'base'.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-08-07 14:47:54 +01:00